Hi - first post here
Trying to resolve an issue with our system at the moment. We have a Potterton Suprima boiler with a Sunvic 207 XLS programmer. I’m only able to get CH to work when HW is active. There is no HW off wiring into the programmer which I imagine could be the issue after doing some research.
However, something that confuses me... when I send a call for CH only this activates the micro switch in the three port valve and turns the spindle. So far so good.... but it doesn’t fire up the boiler.
Just wondered if this would be a wiring issue (due to not having a HW off lead on the programmer) or whether this could be a physical issue with the valve itself.
I’m a total novice but have been studying the Y-Plan and looking at our setup for a number of hours! I imagine a HW off wire could solve the problem but obviously it’s a big job running wires from the wiring unit in the airing cupboard upstairs to the programmer next to the boiler.
I’m about to get a Nest installed so wanted to resolve this before going ahead with that if I could. Would a Nest make any difference to the issue I have if I were to go ahead with the current way of working (having to put HW on when I want CH)
Any advice or thoughts welcomed.
Many thanks
Trying to resolve an issue with our system at the moment. We have a Potterton Suprima boiler with a Sunvic 207 XLS programmer. I’m only able to get CH to work when HW is active. There is no HW off wiring into the programmer which I imagine could be the issue after doing some research.
However, something that confuses me... when I send a call for CH only this activates the micro switch in the three port valve and turns the spindle. So far so good.... but it doesn’t fire up the boiler.
Just wondered if this would be a wiring issue (due to not having a HW off lead on the programmer) or whether this could be a physical issue with the valve itself.
I’m a total novice but have been studying the Y-Plan and looking at our setup for a number of hours! I imagine a HW off wire could solve the problem but obviously it’s a big job running wires from the wiring unit in the airing cupboard upstairs to the programmer next to the boiler.
I’m about to get a Nest installed so wanted to resolve this before going ahead with that if I could. Would a Nest make any difference to the issue I have if I were to go ahead with the current way of working (having to put HW on when I want CH)
Any advice or thoughts welcomed.
Many thanks